Home / 3,095.80-4,643.70-1,147.78

Finding the Fourth Proportional to 3,095.80, 4,643.70 and 1,147.78

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Solution

The fourth proportional to 3,095.80, 4,643.70 and 1,147.78 is: 1,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,095.80 : 4,643.70 = 1,147.78 : x
  2. Step 2: Convert to fraction form
    3,095.80/4,643.70 = 1,147.78/x
  3. Step 3: Cross multiply
    3,095.80x = 4,643.70 × 1,147.78
  4. Step 4: Simplify right side
    3,095.80x = 5,329,945.99
  5. Step 5: Solve for x
    x = 5,329,945.99/3,095.80
  6. Step 6: Final answer
    x = 1,721.67

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.